package com.study.service;

/**
 * @author: 李德才
 * @description:
 * @create: 2020-08-22 20:37
 **/
public  interface Calculator {

    public Integer add(Integer i , Integer j) throws NoSuchMethodException;
    public Integer sub(Integer i , Integer j);
    public Integer mul(Integer i , Integer j);
    public Integer div(Integer i , Integer j);
}
